Book cover



Aug. 4, 1925. 1,548,188

R. J. COPELAND BQOK COVER Filed Aug. 22, 1921 j 6 Y m \\\\m &\\\\\\\\\ Fi/91 2 I Patented Aug. 4, 1925.

1,548,18&

ROBERTMJ. Goran-Ann, or 'roito1vro,:.o1\irARio;" CANADA.

BOOK COVER? Application filed August22, ser-ia 1n6.494;1avfi- To allwho'm it lay concern Be it known that I, ROBERT JAMES Corn- LAND, asubject of the King of Great Britain, and resident of the city ofToronto, county of York, Province of Ontario, in the Dominion of Canada,have invented certain new and useful Improvements in Book Covers,described in the following specification and illustrated in theaccompanying drawings, that form part of the same. i

The objects of this invention are to provide book covers of a verydurable form which may be utilized on many different kinds of books butwill be particularly adapted to books of the loose leaf class on accountof the low cost.

The principal features of this invention consist in forming a cover of aplurality of laminations presenting at the outer wearing edges a.surface of tough wear resisting nonmetallic material and in securingbetween such lan'iinations the edges of a sheet of flexible materialwhich is doubled to form a tubular section to receive the lockingmechanism used in loose leaf books and which is usually encased inmetal.

In the drawings Figure 1 is a perspectiv view of my improved cover.

Figure 2 is a longitudinal sectional view.

Figure 3 is a sectional view of a slightly modified form.

Figure 4 is a. sectional view of a. still further modified form.

Vulcanized fibre is produced in a great variety of thicknesses andsingle sheets are prone to warp and change their shape. This materialhas a grain and if a plurality of sheets are rigidly secured togetherthe warping tendency of one sheet will counteract the other, as alsowill the arrangement of the grain assist in maintaining the compositesheet fiat.

In the form shown in Figures 1 and 2, a pair of thin sheets 1 and 2 ofvulcanized fibre or similar wear resisting homogeneous material aresecured by gluing or cementing to the outer faces of a sheet 3 oflighter and softer material such as mill-board and the composite sheetthus formed is securely riveted through adj acent to the edges. Therivets 4 hold the fibre facings in close engaging contact with themill-board and fibre sheets though very thin will protect the mill-boardfrom being broken, dinged or beat and the mill-board' givesits-"strength and non-warping feature to the fibre.

Prior to cementing the several sheets of material together a. bindingstrip 5 formed of a suitable flexible fabric is doubled and the edges 6thereof areinserted between the facing sheets and the mill-board. Aflexible loop to receive the locking member 7 for loose leaf books isthus firmly secured on one end of the cover. The looped fabric ispreferably stitched longitudinally parallel with the cover back to formthe hinge portion 8 between the bar 7 and the back.

A modified structure is shown in Figure '3 where a mill-board centresheet 9 is arranged between two thin facing sheets 10 of vulcanizedfibre or similar material, the mill-board sheet being of lesser widthand length than the fibre sheets. Edge strips 11 of fibre the samethickness as the mill-board are inserted between the. edges of thefacing sheets, preferably at the sides and the free end of the coverand. the strips and sheets are securely riveted together. The facingsheets are also riveted to the mill-board.

A further modification is shown in Figure 4. A plurality of very, thinsheets of fibre are cemented together, face to face, and the compositesheet is subjected to a heavy pressure to press out any localinequalities in the various sheets. The composite sheet after beingpressed is then securely riveted along the edges so as to'hold thesheets in close contact, thereby preventing the loosening of the cement.

Vulcanized fibre will withstand a. great deal of wear and a book backmade of laminations of such material will be practically indestructible.

It will be readily understood that covers constructed as hereindescribed will not require the employment of expensive labour and theycan be turned out in large quantities at very low cost.

lVhat I claim as my invention is z 1. A book cover formed of a pluralityof thin sheets of vulcanized fibre, and means extending through saidsheets for rigidly securing them together.

2; A book cover, comp-rising, laminations of a vulcanized fibre, and anintervening sheetof material of a different kind interposedtherebetween, the whole being rigidly secured together.

3. A book cover, comprising, a sheet of mill-board, thin sheets of hardfibre cemented to the opposite faces of the mill-board, and rivetsextending through said mill board and fibre sheets around the edges.

4:. A book cover, comprising, a core, a pair of sheets of thin hardfibre of greater Width and length than the core and cemented to thecore, strips of hard fibre inserted between the edges of the fibresheets extending beyond the core and having their outer edges flush Withthe edges of the fibre sheets,

and rivets extending through said fibre sheets and the interveningmembers rigidly securing them together.

5. A book cover comprising a sheet of homogeneous Wear -resistingmaterial, a frame of similar material secured to the face of said sheetWith its outer edges flush with the edges of the sheet, a filler sheetenclosed by said frame, and a covering member of Wear resisting materialsecured to the frame and extending over the filler.

ROBERT J. COPELAND.

